JPH0326721B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for joining together pavement slabs, and particularly relates to a method for joining concrete pavement slabs by joining precast concrete pavement slabs together via connecting reinforcing bars. .

[Prior Art] When forming a paved surface such as a road by laying precast concrete pavement slabs manufactured in advance in a factory or on-site, it is necessary to connect the pavement slabs to each other, and various methods have been proposed for this purpose. .

One way to do this is to drill a horizontal hole in one of the paving slabs, one end of which opens into the end surface of the paving slab, insert the reinforcing bars into this horizontal hole, and connect the end surface of the horizontal hole and the top surface of the paving slab to a conductive hole. After connecting the horizontal holes and opening in the end face of the other paving slab, and aligning the openings of both horizontal holes so that they match, push the connecting reinforcing bars into the horizontal holes on the other side, and then insert them into the horizontal holes. Methods of filling with fillers are known. In such a method, it is necessary to make the diameter of the joint reinforcing bar smaller than the diameter of the horizontal hole, so a gap will be created at the opening after the joining reinforcing bar is pushed in. When filling with the filler, there is a concern that the filler may leak from the gap.

This method is similar to the method of joining paving plates disclosed in Japanese Patent Application Laid-Open No. 58-7003 shown in FIG.
Place the connecting reinforcing bars 3 in the horizontal holes 5 in the other paving slab 4.
, align the openings of both horizontal holes 2 and 5 so that they match, push in the joint reinforcing bars 3 with wire or compressed air, and then when filling the filler 6, the inner walls of the horizontal holes 2 and 5 and the joint reinforcing bars The filling material 6 leaks to the outside through the three gaps.

[Problems to be Solved by the Invention] One possible means of eliminating the leakage is to make the connecting reinforcing bars the same as the inner diameter of the horizontal holes, but if they are made to have the same diameter in this way, the openings of both horizontal holes will have to match. Accuracy is required when matching the paving slab to the pavement, resulting in a problem that significantly reduces the efficiency of the laying work.

The present invention has been made in view of the above-mentioned problems, and its purpose is to provide a method for joining concrete pavement slabs, in which concrete pavement slabs are joined together via connecting reinforcing bars. The purpose is to eliminate leakage to the outside.

[Means for Solving the Problems] This invention provides a horizontal hole in one of the paving slabs, one end of which opens at the joint end surface of the paving slab, and a connecting reinforcing bar placed in the hole, and a hole in the other paving slab that opens at one end. After horizontally installing holes that open on the joint end faces of the pavement slabs and aligning the joint end faces of these pavement slabs so that the openings of the holes provided coincide with each other, a part of the reinforcing bars is inserted into the other pavement slab. In a method for joining concrete paving slabs, in which the concrete is pushed into a hole and then filled with a filler through a filling hole provided in the paving slab and communicating with the outside, the joint end surfaces of the paving slabs are aligned so that the openings coincide with each other. This is a method of joining concrete pavement slabs in which an airtight packing through which the joining reinforcing bars can be inserted is interposed between these joined end surfaces when they are put together.

[Embodiments of the invention] This will be explained based on FIGS. 1 to 3.

Pavement slabs 11 and 12 made of precast concrete to be joined are laid so that their joined end surfaces 13 and 14 are butted against each other. An airtight packing 15 made of elastic material such as foam rubber is provided between the joint end surfaces 13 and 14.
Insert. A horizontal hole 16 with one end opening to the joint end surface 13 is provided horizontally in one of the paving slabs 12, and a joint reinforcing bar 1 is inserted into the horizontal hole 16.
7 is slidably and loosely fitted. This joint reinforcing bar 1
A slidable packing 18 made of elastic material such as foamed rubber is provided at the rear end of 7. Furthermore, horizontal hole 1
A vertical hole 19 and a vertical hole 20, which are filler filling holes with a circular cross section, are provided in the inner and central portions of the paving slab 11, respectively, and communicate with the outer upper surface of the paving slab 11.

In the other paving slab 12, a horizontal hole 21 with one end opening to the joint end surface 14 is horizontally provided by a pipe. This horizontal hole 21 has a diameter slightly larger than the horizontal hole 16 provided in the paving slab 11, and the connecting reinforcing bar 17
is made easy to insert. The length of the horizontal hole 21 is approximately half that of the horizontal hole 16, and the connecting reinforcing bar 17
Approximately half of the horizontal hole 21 is made to fit within this horizontal hole 21. Furthermore, vertical holes 22 and 23 are provided at the back and front sides of the horizontal holes 21, respectively, as filler filling holes having a circular cross section and communicating with the upper surface, which is the external side, of the paving slab 12. When the respective joining end surfaces 13 and 14 are butted together at a predetermined position, the horizontal holes 16 and 21 are arranged so that their respective openings coincide with each other and their axes are the same with the airtight packing 15 interposed therebetween. Paving slabs 11 and 12 are laid. A hole 15a is formed in the airtight packing 15 so as to be able to communicate with the horizontal holes 16 and 21, and into which the connecting reinforcing bar 17 can be inserted.

Therefore, the pavement slabs 11 and 12 with the joint reinforcing bars 17 accommodated in the horizontal holes 21 are inserted into the holes 16 and 21, respectively.
When these joint end surfaces 13, 1 are made to match,
A packing 15 is fitted and interposed between the holes 4 and 4.
At this time, the hole 15a of the packing 15 is the horizontal hole 1.
6 and 21.

In the above state, after cleaning the horizontal hole 21 by blowing compressed air inside from the vertical hole 22, as shown in FIG. The pressure in the holes 16 increases, pressing the slidable packing 18 and forcing the joint reinforcing bars 17 through the holes 15a of the packing 15 and into the horizontal holes 21 provided in the paving slab 12. Then, it is visually confirmed through the vertical hole 22 that the joint reinforcing bar 17 has been pushed deep into the horizontal hole 21, and the compressed air A is stopped. Next, as shown in FIG.
A filling material 24 such as mortar is filled through the vertical holes 20 and 23 while visually checking the filling state. Filling in the horizontal row 16 is performed by filling the space surrounded by the horizontal hole 16 and the packing 18 with the filling material 25, while in the other horizontal hole 21, the space surrounded by the horizontal hole 21 and the airtight packing 15. is filled with filler material 25. At this time, the packing 15 prevents the filler 25 from leaking to the outside from the joint end surface 14 side, and the air in the horizontal holes 16 and 21 is removed from the vertical holes 20 and 2.
3 is discharged to the outside. In this way, the filling material 24
By hardening the pavement plates 11 and 12, the connecting reinforcing bars 17 firmly connect the pavement plates 11 and 12.

Incidentally, reference numeral 25 denotes reinforcing reinforcing bars for the paving slabs 11 and 12, and although the horizontal holes 16 and 21 are formed by pipes in the embodiment, they may be formed by directly bowling the paving slabs.

As described above, the joining end surface 1 of the horizontal hole 21 during filling
The interior of the fourth side is partitioned by packing 15 to prevent leakage of the filling material 24 and to ensure complete filling. Furthermore, when the paving plates 11, 12 contract or expand due to temperature changes after they are joined, the change is absorbed by the deformation of the packing 15, and the paving plates 11, 12 due to temperature changes are
Deformation movement can be prevented.

[Effects of the Invention] According to the present invention, one of the paving slabs has a hole horizontally opened at one end to the joint end surface of the paving slab, and a joint reinforcing bar is housed in this hole, and the other paving slab has one end opening to the joint end surface of the paving slab. After horizontally installing holes that open at the joint ends of the pavement slabs, and aligning the joint end faces of these pavement slabs so that the openings of the holes that were provided coincide with each other, insert a part of the reinforcing bars into the holes of the other pavement slab. In a method of joining concrete pavement slabs, in which the concrete pavement slabs are pressed in and then filled with a filler material through filling holes provided in the pavement slabs and communicated with the outside, when the joining end surfaces of the pavement slabs are aligned so that the openings coincide with each other. This is a method in which an airtight packing is interposed between these joint end faces, through which the bonding reinforcing bars can be inserted.The packing prevents the filler from leaking to the outside, and the bonding reinforcing bars ensure that the pavement is Versions can be concatenated. Furthermore, packing can eliminate the negative effects of concrete pavement slabs caused by temperature changes.

[Brief explanation of the drawing]

Figure 1 is a sectional view showing the state before joining, Figure 2 is a sectional view showing the state during joining, Figure 3 is a sectional view showing the state after joining, and Figure 4 is a sectional view showing the conventional construction method. be. 11, 12... Pavement plate, 13, 14... Joint end surface, 15... Packing, 15a... Hole, 16,
21...Horizontal hole (hole), 17...Connection reinforcing bar, 19
... Vertical hole (filling material filling hole), 24 ... Filling material.

Claims (1)

[Claims] 1 One of the pavement slabs has a hole horizontally installed at one end that opens at the joint end surface of the pavement slab, and the bonding reinforcing bars are placed in this hole, and the other pavement slab has a hole whose one end opens at the joint end surface of the pavement slab. After placing the joint end surfaces of these paving slabs horizontally so that the openings of the respective holes are aligned, a part of the reinforcing bars is pushed into the hole of the other paving slab, and then the reinforcing bars are inserted into the paving slab. In a method for joining concrete pavement slabs in which a filler is filled through a filling hole that is provided and communicates with the outside, when the joint end surfaces of the pavement slabs are aligned so that the openings coincide, the joint is formed between these joint end surfaces. A method for joining concrete pavement slabs, characterized by interposing airtight packing through which reinforcing bars can be inserted.